China Stole This Fighter From Russia—and It's Coming to the South China Sea ( Source- The National Interest / Author- Sebastin Rublin)

The Shenyang J-11 is a Chinese copy of the excellent Russian Sukhoi Su-27 “Flanker” multirole fighter. In fact, it was at first an authorized copy—but Chinese ambitions to adapt it with locally produced technology transformed it into a reverse-engineered headache for Russian industry. In successive variants, the J-11 and the Flanker-derived J-15 and J-16 have been at the forefront of Chinese efforts to produce long-range fourth-generation fighters that can contest the seas around China—if only Chinese engineers can work out the kinks in their domestically produced jet engines......( Read on)